Phinla, Wipada, Wipapan Phinla, and Natcha Mahapoonyanont. “An Integrated Social Studies Teaching Model Based on Problem-Based and Community-Based Learning to Foster 21st Century Competencies in Small Primary Schools”. International Journal of Innovative Research and Scientific Studies 8, no. 3 (April 28, 2025): 509–518. Accessed June 23, 2025. https://www.ijirss.com/index.php/ijirss/article/view/6555.